From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Mauro Aranda Newsgroups: gmane.emacs.bugs Subject: bug#41223: 28.0.50; Calc gives wrong determinant for some matrices with symbolic variables Date: Thu, 14 May 2020 08:49:51 -0300 Message-ID: References: <7A33094E-BD4C-45DE-A57D-F23D50CFC6B4@acm.org> <2CF164B5-2BB9-4740-BF86-FA9CA721672D@acm.org> Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="00000000000027d02005a59a4cb7" Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="93963"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 41223@debbugs.gnu.org To: Mattias =?UTF-8?Q?Engdeg=C3=A5rd?= Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu May 14 13:51:36 2020 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jZCOm-000OM0-8w for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 14 May 2020 13:51:36 +0200 Original-Received: from localhost ([::1]:50164 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jZCOl-0005Tp-2x for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 14 May 2020 07:51:35 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:46802) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jZCOF-0005Lx-6t for bug-gnu-emacs@gnu.org; Thu, 14 May 2020 07:51:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:48985) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jZCOE-0003ul-Ta for bug-gnu-emacs@gnu.org; Thu, 14 May 2020 07:51:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1jZCOE-0006WZ-Rj for bug-gnu-emacs@gnu.org; Thu, 14 May 2020 07:51:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Mauro Aranda Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 14 May 2020 11:51:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 41223 X-GNU-PR-Package: emacs Original-Received: via spool by 41223-submit@debbugs.gnu.org id=B41223.158945701224983 (code B ref 41223); Thu, 14 May 2020 11:51:02 +0000 Original-Received: (at 41223) by debbugs.gnu.org; 14 May 2020 11:50:12 +0000 Original-Received: from localhost ([127.0.0.1]:60529 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jZCNQ-0006Ut-Hw for submit@debbugs.gnu.org; Thu, 14 May 2020 07:50:12 -0400 Original-Received: from mail-wm1-f48.google.com ([209.85.128.48]:36787) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jZCNO-0006UL-MR for 41223@debbugs.gnu.org; Thu, 14 May 2020 07:50:11 -0400 Original-Received: by mail-wm1-f48.google.com with SMTP id w19so17467634wmc.1 for <41223@debbugs.gnu.org>; Thu, 14 May 2020 04:50:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=sE/7HAmKyeL3Yu1zeVV6Hu6+/MeOCzJQZXNl2+nlxgs=; b=nCm0OFzMGRNJAFZtLJ+ah4rlOrJ7xBNcrQxWKHv6IwzN46vdOgOlp5fLWTo8anZZ1W Ur4nLK1FOYNJvo5XR9yoii/UclI5V/BTKSlGTaL03xl+dD32cIkaSZC86zBp2+Ghxqqa o0oGlKaHwDIjpmgMPY/CGP5eMzxnxNGLHniS0/82U8iamAf+esxQmlBFnP7thVbmM/Dg iBFPqFVZceG0ihe4ohjkUHB19YPooAryaid80sdJYkiXxEKNevUk18IIb6iiVr7AZaGS i59vS2z24naaqTkDDK9HaeQG/xMRVsIC9psM9uYz9Sua5paYxGwLi65NB4o0YUVQj4n3 tgFA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=sE/7HAmKyeL3Yu1zeVV6Hu6+/MeOCzJQZXNl2+nlxgs=; b=SllmVf0QS5++TrpvP2cMSKCzvGE4FacAiSEzJnhHGMIG878GwVozeVjyUxaZ4mfWFo rGI2yThktcp30Yya2fakJCe+q0W69G4C3/VpBnlapwaSfgNRvdrhJK9UA3OIfKq23Q6N PwXHVU0TRZecaZLOPdZ3I2vpbCurn3NyWo8zgHZ7WBRNTm35HxUgYRBxF2mu5XuOdsSY WAfkkuzTivZiaZodYBelE3f6GRYA3hzRCcYJ2zYPuVojPHbJqgfZZtGCQq5EzLttiVOq b2yFFY3viJoFEblZV9nlgKMERtTHJraGDnt14hKRWTwm/Bv4T7ZbCYHJ0jPoNc+cVjkB v4wA== X-Gm-Message-State: AGi0PuZCmSlV6wB5gZOIV4/c+Rd9CFb+bzTQfzk4+SMD9PjEoc6VxVGx uJGy8uJlbozmg3vSqzL+tNU86v3cKdLmKL4Pl6A= X-Google-Smtp-Source: APiQypLUJ83Rbl3uVUKoEnGsV6bdH2Jyz+qhKsdBl+RUeWivO5tQZg3hQp1qne71OEtGy/fJSEYKOuim1E1xHexnUM8= X-Received: by 2002:a1c:6156:: with SMTP id v83mr37263275wmb.28.1589457004776; Thu, 14 May 2020 04:50:04 -0700 (PDT) In-Reply-To: <2CF164B5-2BB9-4740-BF86-FA9CA721672D@acm.org> X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:180204 Archived-At: --00000000000027d02005a59a4cb7 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Mattias Engdeg=C3=A5rd writes: > By the way, the change also fixes inversion of matrices such as the > one in your example. Previously, Calc would (erroneously) complain > that the matrix was singular. Ah, yes. I tested that, but forgot to include it in the bug report. Thanks again! --00000000000027d02005a59a4cb7 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Mattias Engdeg=C3=A5rd <mattiase@acm.org> writes:

> By the way, the change al= so fixes inversion of matrices such as the
> one in your example. Pre= viously, Calc would (erroneously) complain
> that the matrix was sing= ular.

Ah, yes.=C2=A0 I tested that, but forgot to include it in= the bug report.

Thanks again!
--00000000000027d02005a59a4cb7--